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Name:________________ Block: _______ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities 2.2 Solving by Adding and Subtracting 2.3 Solving by Multiplying and Dividing 2.4 Solving TwoStep and MultiStep Inequalities 2.5 Solving Inequalities with Variables on Both Sides 2.6 Solving Compound Inequalities 2.7 Solving Absolute Value Inequalities 2.1 Graphing and Writing Inequalities Standards: A.REI.3 Objectives: Students will be able to
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Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

Apr 13, 2018

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Page 1: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

Name:________________ Block: _______ 

Unit 2 Inequalities 2.1 Graphing and Writing Inequalities  2.2 Solving by Adding and Subtracting  2.3 Solving by Multiplying and Dividing  2.4 Solving Two­Step and Multi­Step Inequalities 2.5 Solving Inequalities with Variables on Both Sides 2.6 Solving Compound Inequalities 2.7 Solving Absolute Value Inequalities   2.1 Graphing and Writing Inequalities Standards:  A.REI.3 Objectives:  Students will be able to 

●  

Page 2: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

●   Essential Question:    Do Now:  

 

Vocabulary:  

Term  Definition  Example 

Inequality      

Solution of an inequality  

     

 

 Identifying Solutions of Inequalities  Example 1) Describe the solutions of 3+x<9 in words.   Let’s test values of x to see when the inequality will be true  

Page 3: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 

x           

3+x           

3+x<9           

Solution?           

______________________________________________________________________________________________________________________________________________________________.   Example 2) Describe the solution of 2p<8 in words.      Graphing Inequalities  

 *A closed circle means _______________________________________.  *An open circle means ________________________________________.  Example 1) Graph  −  b > 3  

Page 4: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 

  Example 2) Graph   x ≤ 4   

  Example 3) Graph  −  y ≥ 4 + 5   

  Example 4) Graph  (3 )a > 2

1 − 1   

  Writing an Inequality from a Graph   Write an inequality shown by the graph   Example 1)  

  Example 2)  

Page 5: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

    Example 3)  

    Example 4)  

    Exit Ticket   

  

Page 6: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

2.2  Solving Inequalities By Adding or Subtracting 

Standards:  A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:    Do Now:  

 

 

 Let’s test this…. 

Page 7: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Using Addition and Subtraction to Solve Inequalities  Solve each inequality and graph the solutions.  Example 1)  6 x + 9 < 1   

 Example 2)  x − 5 ≥ 3    

 Example 3)  −  − 4 + a ≤ 2    

Example 4)    − 0 − 3 + y < 1     

 Example 5)  .3 .6 x + 4 ≥ 5     

 

Page 8: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

Real World Applications  Example 1) 

         Example 2)  

        Exit Ticket   

Page 9: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

2.3           Solving Inequalities by Multiplying or Dividing 

Standards:  A.CED.1, A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:   Do Now:  

 

 

 Let’s test this out… 

Page 10: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

Multiplying or Dividing by a Positive number  Just like solving inequalities using addition and subtraction, solving ______________________________________________________________________________________________________________________ is the same thing as solving equations.   Solve the inequalities and graph the solutions.  Example 1)  x − 6 4 > 1    

 Example 2)  −5

x ≤ 1    

 Example 3)  −2

y < 3    

  Example 4)  9.5x4 ≥    

  

Page 11: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Multiplying or Dividing by a Negative Number  What happens when we multiply or divide both sides of an inequality by a negative number? 

      

 Solve each inequality and graph the solutions.  Example 1)  x 4 − 7 > 1    

   

Page 12: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Example 2)  −x

−3 < 3     

 Example 3)  .1x .3− 3 ≤ 9     

 Example 4)  −6

−x ≥ 1     

   Exit Ticket   

Page 13: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 

 2.4           Solving Two­Step and Multi­Step Inequalities 

Standards:  A.CED.1, A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:   Do Now:  

 

 Solving Two­Step and Multi­Step inequalities is just like solving two­step and multi­step equations, but remember that when you multiply or divide by a ______________________________, you must __________________________________________________________.  Solving Multi­Step Inequalities  Solve the inequality and graph the solutions.  Example 1)  v − 3 − 8 + 9 > 5     

Page 14: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Example 2)  −− 8 ≥ v − 3     

  Example 3)  −4

6+n > 2      

  Example 4)   −  − 5 + 8

k ≤ 7     

  Simplifying before Solving Inequalities  Solve each inequality and graph the solutions.  Example 1)  0 (b ) − 9 > 6 − 6     

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 Example 2)  (r ) − 0 4 − 7 ≥ 2     

  Example 3)  06 − (5n )2 > 4 + 5 + 7     

  Example 4)  −b − 3

5 + 41 < 5

12     

  Exit Ticket  

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2.5 Solving Inequalities with Variables on Both Sides 

Standards:  A.CED.1, A.REI.1, A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:   Do Now:  

 

Solving Inequalities with Variables on Both Sides  Solve the inequality and graph the solutions.  Example 1)  6 r− 1 − 7 < r     

Page 17: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Example 2)  v − v− 4 + 8 > 8     

 Example 3)  n 0  − 3 − 1 ≤ n + 6     

 Example 4)  v v 61 − 2 < 3 + 1     

  Simplifying Each Side Before Solving  Solve each inequality and graph the solutions.  Example 1)  (2 a) 6 a 8 + 6 ≥ 1 − 6     

 Example 2)  (a ) − a 4− 4 − 7 > 4 + 3  

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 Example 3)  x (3 x)6 < 6 + 4      

  Example 4)  0 b − (5b )− 3 − 8 ≤ 6 − 6     

  All Real Numbers as Solutions or No Solutions *Some inequalities are true no matter what value is substituted for the variable. For these inequalities, the solution is _____________________.  *Some inequalities are false no matter what value is substituted for the variable. For these inequalities, there ____________________________.  Solve each inequality.  Example 1)   x + 5 ≥ x + 3    

Page 19: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Example 2)  (x ) x 2 + 3 < 5 + 2    Exit Ticket   

1.6           Solving Compound Inequalities  Standards:  A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:   Do Now:  

 

 Vocabulary:  

Term  Definition  Example 

Compound Inequality        

Page 20: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

Intersection       

Union      

 

 Solving Compound Inequalities Involving AND Example: We want to graph the solutions of x<10 and x>0.  First draw a venn diagram to see some solutions. Then graph the solutions to both inequalities. The intersection of the graph shows the numbers that are ___________________________________________. 

 Solve each inequality and graph the solutions.  Example 1) 4 ≤ x + 2 ≤ 8       

Page 21: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

  Example 2)  x− 2 ≤ 2 + 3 ≤ 9   

  Example 3)  n 1− 4 ≤ 3 + 5 < 1      

  Solving Compound Inequalities Involving OR We want to find the solutions for the inequalities x>10 or x<0. First draw a Venn diagram to see the solutions of each inequality. Then graph the solutions of each inequality. The union will show the solutions of __________________________________________________________.  

 Example 1)   or  −− 4 + a > 1 − 4 + a < 3    

Page 22: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

  

 Example 2)  x  or 3x 22 ≤ 6 > 1  

  Example 3)  x 1 or 2x −7 > 2 < 2      

  Writing a Compound Inequality from a Graph  Example 1) 

 Does this inequality involve AND or OR? Are there open or closed circles?   Example 2) 

   Does this inequality involve AND or OR? Are there open or closed circles?  Exit Ticket  

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1.7           Solving Absolute Value Inequalities   

Standards:  A.CED.1, A.REI.3 Objectives:  Students will be able to 

●   

●   Essential Question:   Do Now:  

 

Solving Absolute Value Inequalities Involving < 

Page 24: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

 Solve each inequality and graph the solutions  Example 1)  2 x| | + 3 < 1   

  Example 2)   || 7

n || < 5       

  Example 3)  6 − b| 4 | ≤ 3       

Page 25: Name: Block: Unit 2 Inequalitieslsteers.weebly.com/uploads/3/7/5/9/37590091/unit2notepacket.pdf · Name:_____ Block: _____ Unit 2 Inequalities 2.1 Graphing and Writing Inequalities

  Example 4)  05 6n| | ≤ 6      

   Solving Absolute Value Inequalities Involving > 

 Example 1)  a| + 7| ≥ 1      

  

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Example 2)  k| − 2| − 2 > 9      

   Example 3)  || 4

p || > 3     

   Example 4)  0− x| 2 | + 4 ≥ 2     

  Special Cases of Absolute­Value Inequalities  *If you get a statement that is true for all values of a variable, ____________________ are solutions of the original inequality.  *If you get a false statement when solving an absolute­value inequality, the original inequality ________________________________________>  Example 1)  − 1x| | − 9 ≥ 1   

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  Example 2)  −4 x .5| − 3 | ≤ 8      Exit Ticket   

Points for Unit 2 2.1 Graphing and Writing  Inequalities 

/5 2.2 Solving by Adding and Subtracting 

/5 2.3 Solving by Multiplying and Dividing 

/5 2.4 Solving Two­Step and Multi­Step Inequalities /5 

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2.5 Solving Inequalities with Variables on Both Sides /5 2.6 Solving Compound  Inequalities /5 2.7 Solving Absolute Value Inequalities 

/5 Total     /35